detumescence
noun /ˌdiːtjuːˈmesns/
/ˌdiːtuːˈmesns/
[uncountable] (formal)- a slow reduction in swelling (= the condition of being larger than normal), especially in a penis that was in a state of sexual excitement
肿胀：肿胀缓慢减少，特别是在处于性兴奋状态的阴茎中 词源late 17th cent.: from Latin detumescere, from de- ‘down, away’+ tumescere ‘to swell’.